TM 5-3895-373-20 1.13. EQUIPMENT DATA - Continued. SCREED LIFT CYLINDERS Make...........................................Texas Hydraulics Model..........................................S20015016SPAZ Bore ............................................2.0 in (51 mm) Rod Diameter .............................1.0 in (25,4 mm) Stroke .........................................15.0 in   (381 mm) Operating Pressure ....................3000 psi (20 685 kPa) TOW POINT CYLINDER Make...........................................Prince Mfg Co. Model..........................................SAE 8410 Bore ............................................2 in (51 mm) Rod Diameter .............................1 in (25,4 mm) Stroke .........................................10 in (254 mm) Operating Pressure ....................2500 psi (17 238 kPa) SCREED VIBRATION MOTOR Make .......................................... Gressen Mfg Co. Model ......................................... MGG20020BAIA3 Operating Pressure .................... 2000 psi (13 790 kPa) continuous Flow rate .................................... 1.95 gpm (7,38 l/min.) Vibration Frequency ................... 0 to 33.3 Hz FIRE EXTINGUISHER Portable Dry chemical, 18 lb (8,2 kg) Make Kidde  Fire  Extinguisher Co. Model PRO20TCM Rated 10-A:80-BC SECTION III.   PRINCIPLES OF OPERATION Para Page Alternator/Charging Circuits ............................................................................................................... 1.18.3 1-26 Auger/Conveyor Hydraulic System..................................................................................................... 1.21.1 1-42 Battery/Starting Circuit........................................................................................................................ 1.18.2 1-24 Electrical System Power Distribution.................................................................................................. 1.18.1 1-22 Electrically Controlled Hydraulic Circuits............................................................................................ 1.21 1-41 Engine Cooling System ...................................................................................................................... 1.17 1-21 Engine Combustion Fuel System ....................................................................................................... 1.15.1 1-18 Engine Controls and Indicators Circuit ............................................................................................... 1.18.5 1-28 Engine Lubrication System................................................................................................................. 1.14 1-17 Flow Gate Electrical Circuit ................................................................................................................ 1.18.7 1-32 Fuel System........................................................................................................................................ 1.15 1-18 Hopper Wing Lift System.................................................................................................................... 1.21.2 1-44 Paving Lighting Circuits...................................................................................................................... 1.18.4 1-26 Paving Machine Electrical System ..................................................................................................... 1.18 1-22 Pump Drive System............................................................................................................................ 1.19 1-35 Screed Burner Controls and Indicators Circuit ................................................................................... 1.18.6 1-30 Screed Burner Fuel System ............................................................................................................... 1.15.2 1-19 Screed Extension System .................................................................................................................. 1.21.6 1-52 Screed Lift System ............................................................................................................................. 1.21.3 1-46 Screed Vibration System.................................................................................................................... 1.21.5 1-50 STE/ICE and Diagnostic Connector Circuit........................................................................................ 1.18.8 1-33 Throttle Control Electrical Circuit........................................................................................................ 1.18.9 1-34 Tow Point Lift System......................................................................................................................... 1.21.4 1-48 Track Drive Hydraulic System ............................................................................................................ 1.20 1-36 Track Tensioning System................................................................................................................... 1.20.2 1-40 Tractor Brake Circuit  .......................................................................................................................... 1.20.1 1-38 Turbosupercharger............................................................................................................................. 1.16 1-20 Washdown Spray Assembly Fuel System.......................................................................................... 1.15.3 1-19 1-16